Database Diff Analyzer

Professional database comparison tool that analyzes differences between two database schemas or datasets. Generate precise migration scripts for MySQL, PostgreSQL, and SQL Server. Perfect for database version control, incremental migrations, and synchronization operations. Supports table structure comparison, column differences, index analysis, and constraint validation.

Schema Comparison Migration Scripts Multiple Databases Visual Diff View Export SQL Scripts

Quick Examples

TABLES: Compare table structures and columns
INDEXES: Detect missing or changed indexes
MIGRATION: Generate ALTER TABLE statements

Database System

Source Schema (Original)

Target Schema (New)

Analysis Options

Include DROP statements

Add explanatory comments

Safe mode (backup recommendations)

Difference Summary

Tables Added

Tables Modified

Tables Dropped

Visual Differences

Analyze schemas to see visual differences

Migration Script

-- Migration script will appear here after analysis

Export Options

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What database systems does the analyzer support?

The Database Diff Analyzer supports MySQL, PostgreSQL, and SQL Server schemas. It can compare table structures, columns, indexes, constraints, and generate migration scripts in the appropriate SQL dialect for each system.

How do I compare two database schemas?

Paste your source schema SQL in the left panel and target schema in the right panel. The tool automatically analyzes differences and generates migration scripts. You can choose between CREATE, ALTER, or DROP statements based on your needs.

Can I use this tool offline?

Yes, the Database Diff Analyzer works entirely in your browser without server processing. Your schemas remain private and secure. The tool works on all modern browsers and devices with JavaScript enabled.

What are the limitations for schema size?

The tool can efficiently handle schemas with up to 500 tables and thousands of columns. For optimal performance, we recommend schemas under 10MB. Very complex schemas may take a few seconds to analyze.

Can it handle stored procedures and triggers?

Currently, the tool focuses on table structures, columns, indexes, and constraints. Stored procedures, functions, and triggers comparison is planned for future updates. It excels at structural schema comparison and migration.